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dc.contributor.authorAbdalla, H.
dc.contributor.authorArcaro, C.
dc.contributor.authorBarnard, M.
dc.contributor.authorBöttcher, M.
dc.contributor.authorChandra, S.
dc.contributor.authorKrüger, P.P.
dc.contributor.authorNdiyavala, H.
dc.contributor.authorSeyffert, A.S.
dc.contributor.authorSpanier, F.
dc.contributor.authorVan der Walt, D.J.
dc.contributor.authorVan Rensburg, C.
dc.contributor.authorVenter, C.
dc.contributor.authorWadiasingh, Z.
dc.contributor.authorZacharias, M.
dc.contributor.authorH.E.S.S. Collaboration
dc.identifier.citationAbdalla, H. et al. 2018. Searches for gamma-ray lines and 'pure WIMP' spectra from Dark Matter annihilations in dwarf galaxies with H.E.S.S. Journal of cosmology and astroparticle physics, 11: Article no 037. []en_US
dc.identifier.issn1475-7516 (Online)
dc.description.abstractDwarf spheroidal galaxies are among the most promising targets for detecting signals of Dark Matter (DM) annihilations. The H.E.S.S. experiment has observed five of these systems for a total of about 130 hours. The data are re-analyzed here, and, in the absence of any detected signals, are interpreted in terms of limits on the DM annihilation cross section. Two scenarios are considered: i) DM annihilation into mono-energetic gamma-rays and ii) DM in the form of pure WIMP multiplets that, annihilating into all electroweak bosons, produce a distinctive gamma-ray spectral shape with a high-energy peak at the DM mass and a lower-energy continuum. For case i), upper limits at 95% confidence level of about lang σ v rang lesssim 3 × 10−25 cm3 s−1 are obtained in the mass range of 400 GeV to 1 TeV. For case ii), the full spectral shape of the models is used and several excluded regions are identified, but the thermal masses of the candidates are not robustly ruled outen_US
dc.publisherIOP Publishingen_US
dc.subjectDark matter detectorsen_US
dc.subjectDark matter experimentsen_US
dc.subjectDwarfs galaxiesen_US
dc.subjectGamma ray detectorsen_US
dc.titleSearches for gamma-ray lines and 'pure WIMP' spectra from Dark Matter annihilations in dwarf galaxies with H.E.S.S.en_US
dc.contributor.researchID26598973 - Abdalla, Hassan
dc.contributor.researchID30588766 - Arcaro, Cornelia
dc.contributor.researchID20574266 - Barnard, Monica
dc.contributor.researchID24420530 - Böttcher, Markus
dc.contributor.researchID31125417 - Chandra, Sunil
dc.contributor.researchID11749903 - Krüger, Petrus Paulus
dc.contributor.researchID26403366 - Ndiyavala, Hambeleleni
dc.contributor.researchID20126999 - Seyffert, Albertus Stefanus
dc.contributor.researchID25161814 - Spanier, Felix Alexander
dc.contributor.researchID10060499 - Van der Walt, Diederick Johannes
dc.contributor.researchID21106266 - Van Rensburg, Carlo
dc.contributor.researchID12006653 - Venter, Christo
dc.contributor.researchID26594080 - Wadiasingh, Zorawar
dc.contributor.researchID29092086 - Zacharias, Michael

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